Duplicate PreloadFilePath value on ingestion of File.Generics

When ingesting File.Generics into OSDU, we are using the {OSDU_BASE_URL}/file/v2/files/metadata endpoint to create the File.Generic. In the body we are setting the PreloadFilePath value on data.DatasetProperties.FileSourceInfo.PreloadFilePath as described in the schema. The file is created successfully but when we read out the record from Storage API there is a duplicate value for PreloadFilePath where it has both 'PreloadFilePath' with a capital 'P', and 'preloadFilePath' with a non-capital 'P'. We've tried to ingest a file with a non-capital 'preloadFilePath' as well, but it still comes out with both values when reading it back. We have also tried generating the File.Generic raw json object from our code and using this to create it directly from the metadata endpoint in Postman to disclose that our code is somehow meddeling with the object. This also comes out with the same result. It's also worth mentioning that we are running OSDU through Microsoft ADME.